Q Day represents the theoretical moment when quantum computers become powerful enough to break current cryptographic methods and render existing encryption obsolete. While experts estimate this could occur within 10-15 years, the exact timing remains uncertain since quantum computers haven’t yet reached their theoretical potential.
The growing threat
Major companies including IBM and Google, along with governments and startups, are rapidly advancing quantum computing technology. These machines have already evolved from handling a few quantum bits to managing hundreds, becoming increasingly sophisticated at solving complex problems. Though current quantum computers cannot yet break internet encryption protocols, the consensus among experts points to Q Day’s eventual arrival.
Government agencies are taking this threat seriously. The National Institute of Standards and Technology (NIST) has standardized post-quantum cryptographic algorithms, while Europe’s ENISA focuses on implementation and certification schemes. The UK National Cyber Security Centre (NCSC
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